Add tests for null user
Add tests for null user

endsguy/server,pixelipo/server,andreas-p/nextcloud-server,endsguy/server,andreas-p/nextcloud-server,endsguy/server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,andreas-p/nextcloud-server,nextcloud/server,endsguy/server,nextcloud/server,endsguy/server,pixelipo/server,michaelletzgus/nextcloud-server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,pixelipo/server,nextcloud/server,pixelipo/server,pixelipo/server,michaelletzgus/nextcloud-server,nextcloud/server